Achieve unmatched surface finish and extended tool life with the TaeguTec CNMG 120404 MT CT3000 — engineered for precision turning of steel, stainless steel, and cast iron.

This insert combines TaeguTec’s advanced CT3000 cermet grade with the reliable CNMG MT geometry, delivering a perfect balance of wear resistance, cutting speed, and dimensional accuracy. Designed for medium-to-finishing turning, it ensures consistent chip control and superior performance across a wide range of materials and cutting conditions.

Hook / Attention Line

Slash your cycle-times, increase tool life and cut your cost per component — that’s exactly what the TaeguTec CNMG 120404 MT CT3000 delivers.

Key Features & Specs

  • Insert designation: CNMG 120404 MT (IC = 12.7 mm / Inscribed Circle)

    Grade: CT3000 (cermet) — designed for turning/grooving/parting of alloy steels & stainless steels, featuring high wear resistance and low coefficient of friction.

  • Geometry: Negative 80° rhombic (CNMG-MT family) for robust medium‐rough turning applications of steel, cast iron & stainless steel. 

  • Cutting edge material/coating: Cermet body with “cermet” grade/coating in CT3000 – enabling excellent surface quality and tool-life performance.

  • Application materials: Steel, stainless steel, cast iron (see CT3000 ISO ranges: P/M/K groups) 

  • Typical specs: Insert thickness S = 4.76 mm, Corner Radius RE = 0.4 mm, Depth of Cut (apmx) up to ~5 mm, Feed range ~0.15-0.40 mm/rev quoted for this insert.

Why It’s a Best Seller

  • Less downtime: With the CT3000 cermet grade applied to this geometry, you get longer edge life versus standard carbide in many medium finishing/medium roughing operations — fewer insert changes, fewer interruptions.

  • Better surface finish: The low friction, high wear-resistance of the CT3000 grade means cleaner surface on steel/stainless/cast iron, helping you hit tighter tolerances with fewer passes.

  • High wear resistance: For turning steels and cast irons where wear can ruin productivity, this insert holds up — the combination of CNMG MT geometry + CT3000 gives robust durability.

  • Cost-per-component advantage: By extending tool life and maintaining consistent quality, each component costs you less — ideal for high-volume or repeat operations.

🏭 Application Industries

  • Automotive: engine blocks, shafts, housings (steel, cast iron)

  • Aerospace (when using stainless and high alloy steels), precision turning

  • Die & mould: finishing of steel and cast iron components

  • General engineering: shafts, axles, pins, general steel turning where surface finish and tool life matter.

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Frequently Asked Questions

The CT3000 is a cermet grade from TaeguTec designed for turning, grooving & parting of alloy steels and stainless steels — offering higher wear resistance and a lower friction surface than standard carbide grades, which enhances tool life and surface finish.

Ideal for non-alloy steels, low alloy steels, stainless steels and cast irons (P/M/K groups). The CT3000 grade supports these materials according to ISO classification for turning.

The CNMG 120404 MT geometry is a negative 80° rhombic insert suited for medium-rough to finishing turning applications. You’ll find it useful in external turning, internal turning (given correct holders), where you need reliable performance.

Inscribed Circle (IC) = 12.7 mm; Thickness (S) = 4.76 mm; Corner radius RE ≈ 0.4 mm; Depth of cut (apmax) ≈ 5 mm; Feed range ≈ 0.15–0.40 mm/rev (depending on application and machine/hardware) per supplier

At CNC Tools Depot you’re tapping into India’s largest marketplace for carbide inserts — meaning better availability, faster domestic dispatch, reliable genuine TaeguTec inventory, and support for bulk orders. For high-volume or repeat production runs, consistent supply matters